783b1a868f
This is a partial implementation of PEP 448 to allow unpacking multiple star args in a function or method call. This is implemented by changing the emitted bytecodes so that both positional args and star args are stored as positional args. A bitmap is added to indicate if an argument at a given position is a positional argument or a star arg. In the generated code, this new bitmap takes the place of the old star arg. It is stored as a small int, so this means only the first N arguments can be star args where N is the number of bits in a small int. The runtime is modified to interpret this new bytecode format while still trying to perform as few memory reallocations as possible. Signed-off-by: David Lechner <david@pybricks.com>
39 lines
498 B
Python
39 lines
498 B
Python
def f1(**kwargs):
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print(kwargs)
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f1()
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f1(a=1)
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def f2(a, **kwargs):
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print(a, kwargs)
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f2(1)
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f2(1, b=2)
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def f3(a, *vargs, **kwargs):
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print(a, vargs, kwargs)
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f3(1)
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f3(1, 2)
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f3(1, b=2)
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f3(1, 2, b=3)
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def f4(*vargs, **kwargs):
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print(vargs, kwargs)
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f4(*(1, 2))
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f4(kw_arg=3)
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f4(*(1, 2), kw_arg=3)
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# test evaluation order of arguments
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def f5(*vargs, **kwargs):
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print(vargs, kwargs)
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def print_ret(x):
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print(x)
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return x
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f5(*print_ret(["a", "b"]), kw_arg=print_ret(None))
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